chromatography

chromatography Essay Examples

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An Experiment on the Chemical Purification of Spinach Through Column Chromatography (2124 words, 8 pages)
Absorbance Spectra of Spinach Fractions Purified by Column Chromatography1.) IntroductionColumn chromatography is a particular branch of chemical purification, by which the components of a substance are separated from each other based on each components chemical interactions with certain filters absorbents and solvents. The analyzed species, often a solid ground into ... Read More
An Experiment on Chromatography Using Various Dyes and Solvents (597 words, 3 pages)
Chromatography with various dyes and solventsIntroductionChromatography is the separation a mixtures into their individual parts by passing it through a solution.1 It can be used when isolating compounds, or in forensics with DNA chromatograms, which is a graph showing the result of separating components from a mixture. Components of a ... Read More
A Lab Experiment on the Separation of Anethole and Dimethyl Phthalate Through Column Chromatography (303 words, 4 pages)
Separation of Anethole and Dimethyl Phthalate Through Column ChromatographyAbstractAn unknown liquid solution was analyzed using Column Chromatography. The resulting solution of Anethole and Dimethyl Phthalate was dried and an NMR spectrum obtained.Structures2AnetholeDimethyl PhthalateExperimentalAn unknown liquid mixture ( 41C) was separated using Column Chromatography. The column was set up using Pasteur ... Read More
A Lab Experiment: Extracting Pigments From Spinach Leaves and Performing Thin Layer Chromatography on the Spinach Leaf Extract (872 words, 5 pages)
IntroductionThe objective of this experiment is to extract pigments from spinach leaves and perform Thin Layer Chromatography (TLC) on the spinach leaf extract. We will also determine the best solvent mixture to use to separate the pigments. This experiment is designed to find the most efficient way to separate molecules, ... Read More
Determination and quantification of Anions in Aqueous Samples by Ion Chromatography (2060 words, 7 pages)
Determination and Quantification of Anions in Aqueous Samples by Ion Chromatography AbstractInorganic anions were determined and quantified in tap, stream, and ground water samples using ion chromatography. Standards of chloride, bromide, nitrate, and sulfate were prepared ranging from 10.27 to 0.10 mM, 0.43 to 0.08 mM, 0.356 to 0.008 mM, ... Read More
An Experiment to Determine Plant Pigments Using Reverse Phase Liquid Chromatography (1068 words, 7 pages)
Results and CalculationsThe experiment began by taking 10 mL of spinach extract and separating it in a separatory funnel by using acetone. Before the acetone was added, 10mL of NaCl was added begin the separation. After the addition of NaCl a total of 5 separations with acetone were performed, adding ... Read More
A Component Analysis of Common Analgestic Tablets by Thin-Layer Chromatography (841 words, 3 pages)
Component Analysis of Common Analgesic Tablets by Thin-Layer ChromatographyIntroductionChromatography is an all-inclusive term that encompasses a set of laboratory methods used to separate mixtures. In this lab the objective was to determine the active ingredients in common analgesic tablets through thin-layer chromatography. To do this a thin-layer chromatography (TLC) plate ... Read More
The Effects of Hydrocarbons Found in Gasoline When the Mixture Was Analyzed Using Gas Chromatography (838 words, 11 pages)
ObjectiveThe main purpose of this lab was to determine the effects of hydrocarbons found in gasoline when this mixture was analyzed using gas chromatography. When this analytical instrument was used, different conditions were employed to gather a better understanding of how flow rate, temperature, can affect the analyte while it ... Read More
Thin-Layer Chromatography (899 words, 3 pages)
Lab 2 Thin-Layer ChromatographyAbstractIn the TLC lab, TLC plates are used to experimentally approximate molecular weight and compare weights through Rf values. Different molecular components of each solution tested have a general distance that they will travel on the plate that depends on how heavy they are. Heavier molecules will ... Read More
A Lab Experiment to Understand How To Effectively Perform Chromatography (461 words, 2 pages)
Aim The main purpose of conducting this lab was to help us understand how to effectively perform chromatography, as well as further our knowledge on quantitative analysis. Theory The general theory behind the lab presented was that certain compounds have a relatively specific retention time, which is the time that ... Read More
A Research on Proteins – Gel Filtration Chromatography and Estimation of Molecular Weight (1397 words, 10 pages)
Lab 7 Proteins Gel Filtration Chromatography and Estimation of Molecular WeightThe purpose of this laboratory activity was to learn the process of gel filtration chromatography and to estimate molecular weight of a protein through three exercises calibrating a Sephadex G-75 column, separating the components of a known protein mixture using ... Read More
An Analysis of Samples Using Thin Layer Chromatography and Gas Chromatography (1968 words, 11 pages)
Lab 5 Extraction and Analysis by TLC and GCThe purpose of this laboratory activity was to learn to use different types of chromatography to analyze samples. More specifically paper chromatography of black ink, thin layer chromatography of plant and animal extracts, and gas chromatography of animal extracts, plant extracts, and ... Read More
Liquid Chromatography Finds Its Usefulness in Forensic Science (1629 words, 2 pages)
Journal Article ReviewHIGH PERFORMANCE LIQUID CHROMATOGRAPHY Journal Title Journal of Forensic Science 1996 41(5) 804-811 Article Title Identification and Quantitation of source from Hemoglobin of Blood and Blood Mixtures by High Performance Liquid Chromatography Authors Edgard O. Espinoza, Dr. P.H., Mark A. Kirms, Ph.D., and Maureen S. Filipek, B.S. Introduction ... Read More
A Chromatography Experiment (2597 words, 6 pages)
Introduction Chromatography is a common technique used by biochemists in separating and identifying different amino acids and helps to reveal the function of cell organelles. Chromatography is particularly approved for its accuracy in distinguishing between each compound, which it does by separating the chemicals according to their Relative Molecular Mass ... Read More
An Analysis of an Experimental Procedure on the Use of Chromatography Paper (421 words, 2 pages)
ChromatographyA widely used separation toolPurpose Given a sample of unknown ink, we were to use chromatography paper to determine the identity of the sample. And also, we were to separate two dyes of different color using a silica gel column, made in lab.Procedure Lab manual Experimental Chemistry pg.47-50. There were ... Read More
An Analysis of Gel Filtration Chromatography, a Molecule Separating Technique (362 words, 1 pages)
This lab s topic was Gel Filtration Chromatography. Chromatography is a technique used to separate molecules on the basis of differences in size, shape, mass, charge, solubility and absorption properties. A specific kind of chromatography is gel filtration. This technique separates molecules on the basis of their size. This procedure ... Read More
An Introduction to the Definition and Research of Chromatography (929 words, 2 pages)
Chromatography ResearchMost likely, the average person off the street couldn't tell you exactly what chromatography is. I, however, can tell you this, and much more relating to the subject. Chromatography is defined by Webster's Dictionary as "a process in which a chemical mixture carried by a liquid or gas is ... Read More
An Analysis of the Liquid Chromatography Technique for Molecule Separation (673 words, 2 pages)
Chromatography is a separation technique in which the mixture to be separated is dissolved in a solvent and the resulting solution, often called the mobile phase, is then passed through or over another material, the stationary phase. The separation of the original mixture depends on how strongly each component is ... Read More
A Discussion of Drug Identification with Gas Chromatography Mass Spectometry (778 words, 2 pages)
Drug Identification with Gas Chromatography Mass SpectrometryDrugs are used everyday by people in many different ways for many different reasons. Drug testing has become a standard in pre-employment testing, because of the wide variety of drug use in today s society. Drugs tested for by a possible employer include Cocaine ... Read More
An Introduction to Paper Chromatography (1070 words, 2 pages)
Paper Chromatography Introduction Paper chromatography is used to separate and identify pigments and other molecules from cell extracts that contain complex mixtures of molecules. In 1903 Michael Twsett invented this technique. In 1944 Martin and Synge, who went on to win the Nobel Prize in 1954 for their work, perfected ... Read More
An Essay on Gas Chromatography (1198 words, 2 pages)
Gas Chromatography Purifying alcoholIntroductionThe goal of this lab is to understand the principles of chromatography by purifying alcohol using fractional distillation. Running standards with gas chromatography we were able to see and calibrate our data to find not only how much ethanol our alcohol attained but also what a mixed ... Read More
Chromatography and the Identification of Amino Acids (2601 words, 7 pages)
Identification of amino acids by chromatography lab IntroductionChromatography is a common technique used by biochemists in separating and identifying different amino acids and helps to reveal the function of cell organelles. Chromatography is particularly approved for its accuracy in distinguishing between each compound, which it does by separating the chemicals ... Read More
An Overview of Chromatography (350 words, 2 pages)
Chromatography Lab Title Chromatography LabPurpose (Hypothesis) To understand the process of chromatography, and see which color will have the greatest rate of seperation. Materials Nine drops of blue dye Fifteen drops of green dye, Twenty seven drops of yellow, Seventy drops of re-orange, 250 ml beaker, Absorbent, Water, PipetteProcedures Gather ... Read More
An Analysis of the Method of Chromatography (440 words, 1 pages)
Chromatography is the method of separating chemical substances that makes uses of the relative rates at which they are adsorbed from a moving stream of gas or liquid on a stationary substance, which is usually a finely divided solid, a sheet of filter material, or a thin film of a ... Read More
An Analysis of the Chromatography Methods for Liquid or Gaseous Mixtures (605 words, 1 pages)
Chromatography is a method of separating substances that make up a liquid or gaseous mixture. One use of it is to measure or identify low concentrations of substances, such as pollutants in air or water. Another use is to separate and identify products of chemical reactions. Chemists use this method ... Read More
Gas Chromatography and the Different Use of Drugs (767 words, 1 pages)
Drugs are used everyday by people in many different ways for many different reasons. Drug testing has become a standard in pre-employment testing, because of the wide variety of drug use in today's society. Drugs tested for by a possible employer include Cocaine (crack), Amphetamines (crystal), Opiates (codeine, morphine, heroin), ... Read More
An Introduction to the Gel Filtration Chromatography (359 words, 1 pages)
This labs topic was Gel Filtration Chromatography. Chromatography is a technique used to separate molecules on the basis of differences in size, shape, mass, charge, solubility and absorption properties. A specific kind of chromatography is gel filtration. This technique separates molecules on the basis of their size. This procedure is ... Read More
A Discussion of Drug Identification with Gas Chromatography or Mass Spectrometry (774 words, 1 pages)
Drug Identification with Gas Chromatography Mass Spectrometry Drugs are used everyday by people in many different ways for many different reasons. Drug testing has become a standard in pre-employment testing, because of the wide variety of drug use in todays society. Drugs tested for by a possible employer include Cocaine ... Read More
Understanding Chromatography (346 words, 1 pages)
Chromatography is a useful method for separating the substances in certain mixtures. There are many physical processes which may be used to separate mixtures, but chromatography will not be as obvious to students as others such as filtering, evaporation, or using a magnet. Because the substances which make up certain ... Read More
An Analysis of Gas Chromatography (612 words, 2 pages)
Introduction Gas Chromatography ( GC ) is the most widely used analytical technique for the speciation and quantification of organic compounds. The total cost for these analyses is enormous. Protracted sample turnaround times, which are common for contract laboratories, cause expensive bottlenecks. Dramatic reductions in analysis time could lead to ... Read More
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